Here are pages from the 47-55 Factory Assembly Manual. Hope this helps a little.
I scanned them in using normal resolution. I can go higher for better detail if needed.
Attachments
Floor Panel 01.jpg (101.79 KB, 201 downloads)
Floor Panel 02.jpg (60.88 KB, 201 downloads)

Last edited by buoymaker; 01/20/2022 12:10 AM.

"Adding CFM to a truck will only help at engine speeds you don't want to use."
"I found there was nothing to gain beyond 400 CFM."